Question

The vectors a, b and a + b are

• A. Collinear
• B. Coplanar
• C. Non-coplanar
• D. None of these

Answer 1

Answer: (B)

Coplanar

Answer 2

These are coplanar because $1 ( \mathbf { a } ) + 1 ( \mathbf { b } ) = \mathbf { a } + \mathbf { b }$.